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CAPE Physics 2007 U1 P2 Mark Scheme

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PETSTCS
uult 01 - PTDER, 02
taiB gcEDC 200?
i.
OrestLon !.
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l
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1
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01 - DIDIA 02
tasB Serot 2oo?
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UIrlE 01 - PIPER 02
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6
PEISres
UlrlT 01 - PrPtR 02
toRr scEA 2007
OuestLon I
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i
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6,
(r,
(11, p- .,OdB,
- (10 dB)
(1'
I x l0'2 f, u-'
(r,
x l0'rz r n'2
- .ioo as (1,
(111, Threshold
of paln: 120 - l0 t9
r - 10ux I x l0-u
. i 1.0 nu-2
(1,
#
(1'
C (1,
PEESTCS
omr 01 - PIPIR 02
tGRf, gcsEtc 2oO?
ChrestLon 6 rpe"t ,d)
(b) (lil)
EC
I
dconr ,d)
I
Ftom lnverse law
I - i
= r, - rr4
t1,
f2 -
urs
6
x 1o-2 x 2to2- { rr (1}
(1,
I
i
I
nehce
I
xz- 2.0n (1,
$tecttta ObJofErrr: Io&rlo 2t l.t, 1.5, l.9r a.!0, a.1l
I
u2
v--.rcv3u I lj,LEE.l ,trE' I SVV t
PETSICS
UNIT 01 -
TPER 02
tOnA sCM
200? i,i
ChrcstLon ?
(al
(r)
Refracti.ve Lndex ls the ratlo of the spced of
ltEht Ln vaguo (or alr) to the speed ln the
E
I'E
t
nedl.un.
'
(11) Diagrara directloo tovards the oornal (1,
ravelength decrcases (U
(1U) Derlvatlon of lar
(1v) FrequencY ts lnvariant
.
tl1 Ir - nz la
2
3
(1,
2
(11
2
(b, (1) csrd' '=*i=d
- 1.99 r 10'n s-r (U
1.51
cbtr ' '=*l=d ' 1'94 x 1o'n g-t (u
1.55
(111 Red. 1.51 sl'n 30: 1 x sln 02 (1,
I
Q. {9.0" (1}
Blue 1.55 sln 30 ' 1 x sr.n 0l
Oar
- 50.8o (1,
DlspersLoo - 1.8c (1,
6
(c) Eormrla ntr ' a sln 0 (1,
ctrange
a ' (1200 x 10lr-r ' 8.33 x 10-?m [or cquivaleat(11
of foruulal
Red (uslng flrst order)
sln0-
678x10-.'- (1)
!-'
8.33 r 10-'
- 0.81t1
0 - 5l.lo (1!
Blue slnilar1Y 0tro.' 30.40 (1'
Dlspcrsion 24' (U
L.9, 1.a, 1.10, 3.3, 3.8,
{notflc obJoctlvrts tlodd. 2z 3.9
8
u2
(
PETSICS
Intr!8 01 - PrPEn 02
taRr scEtc 200?
i.i
Orestlon 8
(e) (1)
rc ur
GE rs theraoneter needed
in order to calibrate
ot her thermometers(U. Thi;-i" u"".o".-it-grrr."
re a$l1es on the.Ldeal gas (ther:nodynanic) z---l
gc ale (11 .
(i$
e.g. A thermocouple could be used (11 .
sna1l size rould be useful (1i.'
al
The
2
2
2
(iut
2
arn glrr rryr trro (21 .
(b)
(it
I
R -i Ro elA
5
i
icel pol.nt - 273k (1)
stei1n polnt - 373 k (1)
I
' 'ilT# - 48'r I ssl2?3
iffi
\273 3n)
"(t-
i
i
i
B=3.9{x1O3k
(it1
Tm'5- - 3.97 x 1o-3 fl
f,or
" ' ir.9?
_ 3.94 x tO,
97x
3.9,! x ld
2200
.9? x 1.0-3
-
I
50C
(1)
x 1O-3 et'e' r tdrr
2200
t-
(1,
?360 (l
i
t
(u
1)
ln 48 1 =
!
-3t373
(1,
T
3
(1)
= 298 k (1)
PEtstcs
)
utsls ol - DltPlR 02
tasr SCEIIG
i't
'OO7
Orestton t (Contrd)
E G
(b, (cont,d,
'
g=
(Iil) (a; 100
Qu -
3
R-
R t.-
- Rr-
g, = 2200-zsso
153 - 7350,
(1,
71.6oC (1,
(b) Reslstance ngt linear utth
SD.cfl& Objoctirrr: Uodulo 3: L.l,
teuperature.
1.2,1.3, t.t, l'.s
I
I
u
a
PEIgICS
urr8 01 - PIPER 02
urRB scEuE 200?
''i
I
Orestion 9
!
i
I
(a)
i
(1,
BC
fn motion and colll.de with
e)
the ralls (1,
Force because
.r,"ngJ-"i
ioi"n.*
Pressure is sum
"ror roices-alJio.o (1,
I
i
i
uf
6
by area (t)
More coltiilons per second
so greater (1,
average force.
b)
c
Mole-cules move faster (1,
Hlt harder and nore
often (1,
(lit Ur ing pV - nRT
lreTz
P2 '
P1 (1,
rLTr
t!
frpryera ture conversions\
l2r9e,
I (1'
(lto,c' - 300k
- 32ok
Pz
)
i' 6.7 x 32O
illoox{.5x10s
(r,
= 11.5 x 105 pa (1,
(b) (r,
Au- Q+w
(1,
Au. change in Lnternal energy
Oi. ::::9Y
bY heatins-'(u
'dq"9 by
'
WF energy
added
doing
I
2
,o"[
(ril a)
b)
Q- n q Ae (1,
- 6.2 x L2.5 x 25
- 1940 iI (1,
Au-Q-19{0U (1)
c)
Au-e+r
(1'
8
19110- 3200 + w (U
w = -L260 ;I
work done by the gas
= 1260 .r (11
Q= n Cp a0 (t,
d)
-P= 6.23200
,.ZS - 20.6 ,, nol-l k-r (U
co
gnettl,c 6Joati,vor: ttodtrlo
i
3: {._1, {.3, S.1, S.2, S.3,
5.S, s.c'-'',
I
L2
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